Using a context with a subdomain - always get a 503 error

Hi everyone,

I created a new context for a subdomain as described in the manual : http://rtfm.modx.com/display/revolution20/Creating+a+Subdomain+from+a+Folder+using+Virtual+Hosts
I created the entries in the context settings as shown and also then created them for the web context so that I can cross-link. Everytime however I call up the subdomain, I get the error from the index.php, lines 56 to 63
/* include the modX class */
if (!@include_once (MODX_CORE_PATH . "model/modx/modx.class.php")) {
$errorMessage = ’Site temporarily unavailable’;
@include(MODX_CORE_PATH . ’error/unavailable.include.php’);
header(’HTTP/1.1 503 Service Unavailable’);
echo "<html><title>Error 503: Site temporarily unavailable</title><body><h1>Error 503</h1><p>{$errorMessage}</p></body></html>";
exit();
}
in the config.core.php I pasted the path from the config.core.php file in the main website directory httpdocs. The subdomain directory is within the httpdocs directory (one level).

I am not sure what to debug from here. Any ideas?

Thanks!